            &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         &\multicolumn{1}{c}{(5)}         &\multicolumn{1}{c}{(6)}         \\
\midrule
p\_air\_incident&      0.0655\sym{***}&      0.0655\sym{***}&      0.0654\sym{***}&      0.0659\sym{***}&      0.0631\sym{***}&      0.0627\sym{***}\\
            &   (0.00439)         &   (0.00438)         &   (0.00439)         &   (0.00440)         &   (0.00508)         &   (0.00528)         \\
\addlinespace
p\_referred  &                     &     0.00559         &                     &                     &                     &                     \\
            &                     &    (0.0144)         &                     &                     &                     &                     \\
\addlinespace
p\_ee\_incident&                     &                     &      0.0132\sym{***}&      0.0132\sym{***}&      0.0153\sym{***}&      0.0147\sym{***}\\
            &                     &                     &   (0.00242)         &   (0.00244)         &   (0.00284)         &   (0.00289)         \\
\midrule
N           &     4158000         &     4158000         &     4158000         &     4012920         &     2949660         &     2753016         \\
r2          &      0.0194         &      0.0194         &      0.0195         &      0.0331         &      0.0421         &      0.0426         \\
ar2         &                     &                     &                     &                     &                     &                     \\
